2191674 has 16 divisors (see below), whose sum is σ = 4641408. Its totient is φ = 687552.

The previous prime is 2191633. The next prime is 2191687. The reversal of 2191674 is 4761912.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10642 + ... + 10845.

It is an arithmetic number, because the mean of its divisors is an integer number (290088).

2^2191674 is an apocalyptic number.

2191674 is an abundant number, since it is smaller than the sum of its proper divisors (2449734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2191674 is a wasteful number, since it uses less digits than its factorization.

2191674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21509.

The product of its digits is 3024, while the sum is 30.

The square root of 2191674 is about 1480.4303428395. The cubic root of 2191674 is about 129.8948656885.

The spelling of 2191674 in words is "two million, one hundred ninety-one thousand, six hundred seventy-four".